pulling overarm throw
A sumo kimarite where the attacker pulls the opponent down by the back of the mawashi while extending the other arm over the opponent's arm or shoulder.
The yokozuna won the match with an uwatedashinage.
上手投げ is a general overarm throw, while 上手出し投げ specifically involves pulling the opponent forward and down by the back of the mawashi.
Compound of 上手 (uwate, 'overarm grip') + 出し (dashi, 'pulling out') + 投げ (nage, 'throw'), describing the pulling overarm throw in sumo.